Captain Kirk liked to tickle Lt Leslie before sending him to his ill fated adventure on the planet Omega 5. Spock is busy giving the wall a high-five while McCoy subtly tries to pull the "Yawn arm around the shoulder" move on Spock.
Mr. Spock high-fives the graffitied wall because Scotty's hand has fallen asleep. Meanhile, Kirk is annoyed with the security measures he must endure before boarding his flight for his vacation on Omega 5.
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